for the past 1 month i m facing a very annoying problem, that is whenever i m playing games or doing something my PC get freezed and makes too much fan noise, after that i cant do anything cause the total hardware lock it seems i have to forcibly power off the PC by switching it off from the Power supply switch. I thought it might be because of the SMPS (Corsair TX 750) so i changed my SMPS GS-800 Brand new. it worked for 1 week without any problem now i m facing the same problem. PC freezes and i cant do anything is it problem of Motherboard (DP55WG) or video card ( MSI Cyclone GTX-460). I want to know what exactly the problem is?